Give us the high level overview!

you guys may  want to read this very thorough comprehensive post with tube videos to back it all up.https://www.biggerpockets.com/forums/92/topics/522621-morris-invest-review-after-8-months-of-ownership?

I've been using Avail to generate leases and collect payments from guests for my MTR but I don't think it has comprehensive enough features. 

More details pertain to the program- that's the broad overview. 

When you find out the present zoning of the property, the future land use and the local agencies comprehensive plan for how they see the area being developed (all can be done at the local planning office) you will have a much better idea of what you have just bought.If the land could in any way be developed into something more than single family residential lots, i.e. if there is any multi-family or commercial component than I would advise you to hire someone qualified to help you with the site planning of the development.

A financial advisor can help you  create a comprehensive financial plan to make sure you cover all your bases before you move forward. 

Your question in (1), my simplest answer is this is why you're not ready to be a Managing Broker, your lack of knowledge, insight and comprehension in this regard. 

I just want to give an overview of the characteristics of the city and people for the sake of adding any bit of valid information to your research.

Both presentations provide a great overview of the ADU law!

As you venture to try and find what cities/areas to buy in might I suggest this resourcehttps://www.areavibes.com/This is a great website to get an over view/starting point for what the neighborhoods are like.